/**
* Copyright (C) 2009 - present by OpenGamma Inc. and the OpenGamma group of companies
*
* Please see distribution for license.
*/
package com.opengamma.financial.analytics.model.pnl;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import com.opengamma.OpenGammaRuntimeException;
import com.opengamma.analytics.financial.timeseries.returns.TimeSeriesReturnCalculator;
import com.opengamma.analytics.financial.timeseries.returns.TimeSeriesReturnCalculatorFactory;
import com.opengamma.engine.ComputationTarget;
import com.opengamma.engine.ComputationTargetSpecification;
import com.opengamma.engine.function.AbstractFunction;
import com.opengamma.engine.function.FunctionCompilationContext;
import com.opengamma.engine.function.FunctionExecutionContext;
import com.opengamma.engine.function.FunctionInputs;
import com.opengamma.engine.target.ComputationTargetType;
import com.opengamma.engine.value.ComputedValue;
import com.opengamma.engine.value.ValueProperties;
import com.opengamma.engine.value.ValuePropertyNames;
import com.opengamma.engine.value.ValueRequirement;
import com.opengamma.engine.value.ValueRequirementNames;
import com.opengamma.engine.value.ValueSpecification;
import com.opengamma.financial.security.FinancialSecurityUtils;
import com.opengamma.financial.security.equity.EquitySecurity;
import com.opengamma.timeseries.date.localdate.LocalDateDoubleTimeSeries;
/**
*
*/
public class EquityPnLFunction extends AbstractFunction.NonCompiledInvoker {
@Override
public ComputationTargetType getTargetType() {
return ComputationTargetType.POSITION;
}
@Override
public boolean canApplyTo(final FunctionCompilationContext context, final ComputationTarget target) {
return target.getPosition().getSecurity() instanceof EquitySecurity;
}
@Override
public Set<ValueSpecification> getResults(final FunctionCompilationContext context, final ComputationTarget target) {
//final String currency = FinancialSecurityUtils.getCurrency(target.getSecurity()).getCode();
final String currency = FinancialSecurityUtils.getCurrency(target.getPosition().getSecurity()).getCode();
// Please see http://jira.opengamma.com/browse/PLAT-2330 for information about the PROPERTY_PNL_CONTRIBUTIONS constant
final ValueProperties properties = createValueProperties()
.with(ValuePropertyNames.CURRENCY, currency)
.withAny(ValuePropertyNames.SAMPLING_PERIOD)
.withAny(ValuePropertyNames.SCHEDULE_CALCULATOR)
.withAny(ValuePropertyNames.SAMPLING_FUNCTION)
.withAny(ValuePropertyNames.RETURN_CALCULATOR)
.with(ValuePropertyNames.PROPERTY_PNL_CONTRIBUTIONS, "Delta").get();
return Collections.singleton(new ValueSpecification(ValueRequirementNames.PNL_SERIES, target.toSpecification(), properties));
}
@Override
public Set<ValueRequirement> getRequirements(final FunctionCompilationContext context, final ComputationTarget target, final ValueRequirement desiredValue) {
final ValueProperties constraints = desiredValue.getConstraints();
final Set<String> samplingPeriodName = constraints.getValues(ValuePropertyNames.SAMPLING_PERIOD);
if (samplingPeriodName == null || samplingPeriodName.size() != 1) {
return null;
}
final Set<String> scheduleCalculatorName = constraints.getValues(ValuePropertyNames.SCHEDULE_CALCULATOR);
if (scheduleCalculatorName == null || scheduleCalculatorName.size() != 1) {
return null;
}
final Set<String> samplingFunctionName = constraints.getValues(ValuePropertyNames.SAMPLING_FUNCTION);
if (samplingFunctionName == null || samplingFunctionName.size() != 1) {
return null;
}
final Set<String> returnCalculatorName = constraints.getValues(ValuePropertyNames.RETURN_CALCULATOR);
if (returnCalculatorName == null || returnCalculatorName.size() != 1) {
return null;
}
//final String currency = FinancialSecurityUtils.getCurrency(target.getSecurity()).getCode();
final String currency = FinancialSecurityUtils.getCurrency(target.getPosition().getSecurity()).getCode();
final Set<ValueRequirement> requirements = new HashSet<ValueRequirement>();
final ValueProperties priceSeriesProperties = ValueProperties.builder()
.with(ValuePropertyNames.CURRENCY, currency)
.with(ValuePropertyNames.SAMPLING_PERIOD, samplingPeriodName)
.with(ValuePropertyNames.SCHEDULE_CALCULATOR, scheduleCalculatorName)
.with(ValuePropertyNames.SAMPLING_FUNCTION, samplingFunctionName).get();
// final ComputationTargetSpecification targetSpec = target.toSpecification();
final ComputationTargetSpecification targetSpec = new ComputationTargetSpecification(ComputationTargetType.SECURITY, target.getPosition().getSecurity().getUniqueId());
requirements.add(new ValueRequirement(ValueRequirementNames.FAIR_VALUE, targetSpec, ValueProperties.with(ValuePropertyNames.CURRENCY, currency).get()));
requirements.add(new ValueRequirement(ValueRequirementNames.PRICE_SERIES, targetSpec, priceSeriesProperties));
return requirements;
}
@Override
public Set<ComputedValue> execute(final FunctionExecutionContext executionContext, final FunctionInputs inputs, final ComputationTarget target, final Set<ValueRequirement> desiredValues) {
final ValueRequirement desiredValue = desiredValues.iterator().next();
final ComputedValue fairValueCV = inputs.getComputedValue(ValueRequirementNames.FAIR_VALUE);
final Object fairValueObj = fairValueCV.getValue();
if (fairValueObj == null) {
throw new OpenGammaRuntimeException("Asset fair value was null");
}
final double fairValue = (Double) fairValueObj;
final Object priceSeriesObj = inputs.getValue(ValueRequirementNames.PRICE_SERIES);
if (priceSeriesObj == null) {
throw new OpenGammaRuntimeException("Asset price series was null");
}
final Set<String> returnCalculatorNames = desiredValue.getConstraints().getValues(ValuePropertyNames.RETURN_CALCULATOR);
final TimeSeriesReturnCalculator returnCalculator = getTimeSeriesReturnCalculator(returnCalculatorNames);
final LocalDateDoubleTimeSeries returnSeries = (LocalDateDoubleTimeSeries) returnCalculator.evaluate((LocalDateDoubleTimeSeries) priceSeriesObj);
final ValueSpecification resultSpec = new ValueSpecification(ValueRequirementNames.PNL_SERIES, target.toSpecification(), desiredValue.getConstraints());
//final Object result = returnSeries.multiply(fairValue);
final Object result = returnSeries.multiply(fairValue).multiply(target.getPosition().getQuantity().doubleValue());
return Collections.singleton(new ComputedValue(resultSpec, result));
}
private TimeSeriesReturnCalculator getTimeSeriesReturnCalculator(final Set<String> calculatorNames) {
if (calculatorNames == null || calculatorNames.isEmpty() || calculatorNames.size() != 1) {
throw new OpenGammaRuntimeException("Missing or non-unique return calculator name: " + calculatorNames);
}
return TimeSeriesReturnCalculatorFactory.getReturnCalculator(calculatorNames.iterator().next());
}
}